單項選擇題

Which code causes only a Level 2 adjacency to be formed under the SONET interface so-2/2/2 with Frame Relay encapsulation?()

A.so-2/2/2 { unit0 { disable familyiso }}
B.isis{ level1 disable; interfaceso-2/2/2.0 { disable } interfaceall;
C.so-2/2/2 { unit0 { disablelevel 1; familyiso }}
D.isis{ level1 disable; interfaceall; }

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